Micro Machines Heavy Haulers #12 Collection Micro Machines Heavy Haulers #12 Collection! Includes Bulldozer, Concrete Mixer, Crane with Semi and Road Crew! The Original Scale Miniatures! Custom Display Packaging! The approximate size of a Micro Machines vehicle is 1.5 inches long. Approximate size of unopened packaging is 8 x 7.5 x 2.5 inches.